Google Scripts: Generating a set of data to include in an email

As a newcomer to Google Script and JavaScript, I'm on a mission to email a list of file names extracted from a spreadsheet. The names reside in a column within my sheet, and after defining a variable called "newfiles" to cherry-pick only the necessary values, things seemed promising.

function sendUpdate()
{
 
  //initialize variables
  var sheet = SpreadsheetApp.getActiveSpreadsheet().getSheetByName("finishedfiles");
  var range = sheet.getDataRange().getValues();
  
    for (n = 0; n < range.length; n++)
      {
      var newfiles = range[n][1];
      }

The snag arises when the script dispatches an email for each value in the range.

var startRow = 2;
  
for (var i = 0; i < range.length; i++)
if (startRow + i , 5 != '')
      {
       MailApp.sendEmail
       {to: "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="cba6ae8bca6aaa2a7e5a8a4a6">[email protected]</a>", 
       subject: "list of files", 
       htmlBody: "Here's your list:<br>" + newfiles +
       "<br>This message was sent automatically."});
       }

To solve this issue, I need to amalgamate the values in my variable into a single text string that can be embedded in my message so as to send just one email.

Although it feels like a novice question, I'm struggling to crack the code.

Answer №1

To avoid calling MailApp for each file name in the range, it is important to consolidate all file names into one big email.

function sendUpdate() {
  var sheet = SpreadsheetApp
      .getActiveSpreadsheet()
      .getSheetByName("finishedfiles");

  var range = sheet.getDataRange().getValues();

  var filenames = range
    .map(function(row) {return row[1];}) // Extract the filenames column
    .join("<br>");                       // Combine them all into a string

  MailApp.sendEmail(
    {to: "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="214c4461464c40484d0f424e4c">[email protected]</a>", 
     subject: "list of files", 
     htmlBody: "Here's your list:<br>" + filenames +
     "<br>This message was sent automatically."});
}

What purpose does if (startRow + i , 5 != '') serve? Does it always result in true?

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